fix Coverity issues

src/Mod/PartDesign/Gui/TaskDatumParameters.cpp

@@ -192,9 +192,9 @@ TaskDatumParameters::TaskDatumParameters(ViewProviderDatum *DatumView,QWidget *p
     ui->lineRef4->blockSignals(false);
     ui->listOfModes->blockSignals(false);
 
+    this->iActiveRef = 0;
     if (pcDatum->Support.getSize() == 0){
         autoNext = true;
-        this->iActiveRef = 0;
     } else {
         autoNext = false;
     }

src/Mod/PartDesign/Gui/TaskPocketParameters.cpp

@@ -54,6 +54,7 @@ using namespace Gui;
 
 TaskPocketParameters::TaskPocketParameters(ViewProviderPocket *PocketView,QWidget *parent, bool newObj)
     : TaskSketchBasedParameters(PocketView, parent, "PartDesign_Pocket",tr("Pocket parameters"))
+    , oldLength(0)
 {
     // we need a separate container widget to add all controls to
     proxy = new QWidget(this);